公开(公告)号：US3837628A

公开(公告)日：1974-09-24

申请号：US88356669

申请日：1969-12-09

Applicant: ETHYL CORP

Inventor： BARTHOLOMEW E

IPC: F02B1/04 ,  F02M1/00 ,  F02M1/10 ,  F02M3/05 ,  F02M3/08 ,  F02M7/11 ,  F02M11/02

CPC classification number: F02M3/08 ,  F02B1/04 ,  F02M1/00 ,  F02M1/10 ,  F02M3/05 ,  F02M7/11 ,  F02M11/02

Abstract: Gasoline engine induction system for automobiles and the like provides less emission of undesirable exhaust products by having carburetor without an idle jet so that engine idles on a lean main jet with small enrichment arranged for idle as against offidle operation. Enrichment can be provided as by having the closing of the throttle open an external vent in the carburetor bowl, or by having a supplemental fuel jet opening in throttle barrel alongside idle position of downstream tip of throttle blade. Automatic choke can also be operated by mixture taken from downstream of carburetor venturi, heated, and delivered to thermally responsive choke actuator. Above features can be incorporated in a single small primary carburetor that is combined with one or two large secondary carburetors used for high power operation. Supplemental heating can be provided for mixture delivered by primary carburetor.

Abstract translation: 用于汽车等的汽油发动机感应系统通过没有怠速喷射的化油器来提供较少的不期望的废气产物的排放，使得发动机在稀薄主喷嘴上空转，并且具有小的浓缩排列为空闲而不是怠速运转。 可以通过使节气门的关闭打开化油器碗中的外部通风口，或者通过在节气门筒中沿节流叶片的下游尖端的怠速位置具有补充燃料喷射开口来提供浓缩。 自动扼流圈也可以从化油器文丘里管下游的混合物操作，加热并输送到热响应的扼流器致动器。 以上特征可以结合在单个小型主要化油器中，其与用于高功率操作的一个或两个大型二次化油器组合。 可为初级化油器提供的混合物提供补充加热。